Lubricating device



(-No Model.)-

A. J. ROBINSON. LUBRIGATING DEVICE.

No. 376,966; Patented J n. 24-, 18884 N4 PETERS. Fhulo-Liihographer, Walhingtun. D. C.

UNITED" STATEsi AARON J. ROBINSON, or FREMONT, NEW HAMPSHIRE.

PATENT ,OFFIQ LUBVRICAVTING DEVICE.

SPECIFICATION forming part of Letters Patent ll'o. 376,966, dated January 24, 1888 Application filed April 30, 1887.

To all whom it may concern:

Be it known that I, A RON J. RoBINsoN,

a citizen of the United St'ates,residi'ng at Fremont, in the county of Bockingham and State of New Hampshire, have invented a new and useful Lubricating Device, of whichthe following is a specification, reference being had to the accompanying drawings.

- My invention relates to a device especially adapted for lubricating the bearing of a loose pulley supported bya shaft; and it consists in the mechanism,substantiall y as hereinafter described, and specifically pointed out in the claims.

In thedrawings, Figure 1 is an external view of a device embodying myinvention, showing theapplication of the same. shows a longitudinal central section. Fig. 3 shows an end view of the bushing B and the oil-reservoir. Fig. 4 is a transverse section of the oil-reservoir and shaft. Fig. 5 shows a longitudinal sect-ion of the bushing B and, the

oil-reservoir, taken on line 11 in Fig. 4.

On the shaft A, I secureas by means of a set-screw, aa, bushing, B, having combined therewith an oil-reservoir, O. The reservoir may have exteriorly the form of a collar,as

shown, and is hollowed out to form a chamher, 1). Oil may be poured into this chamber through an opening, which may be closed by screw preventing leakage around the screw.

chamber 1) to the end of this bushing.

Channels or holes 6 are formed in the interior of the bushing B, which extend from the On this bushing is locatedthe pulley D, which is I to run loosely thereon and on another bushing, E, placed on the shaft within the hub of the pulley. meets one end of the hub of t-he'pul'ley,.'while Y a wall of the reservoirO, which forms a shoulder for the bushing B, mcetsthe other end of saidhub. The bushings B and E are of such hub, and preferably about midway the length thereof. This space I fill with absorbent m'a- Fig. 2.

Ashoulder,f, on the bushing E Serial No. 236,717. .(No model.) I

terial 9, like cottouwicking, which material I prefer to have extend through the channels 6 to the chamber b; j

A pulley, F, fixed to the shaft'as by means of a set-screw, h-is generally employed in connection with a pulley'loose on the shaft.

the outer end .of the bushing E, packing i,

Iinsert, between the hub of the fixed pulley and which preventsthe escape of oil from between this bushing and the shaft; pulley is not required, a collar fixed on shaft may take the place thereof." 1 The operation and effect of my device are obvious.' There being oil in the chamber. b, it will percolate through the channelsie andabsorbent material 9, asrequired, lubricating When the fixedthe and the exterior surface of that portion of the bushings B and E forming the bearing for this ,pullcy. The escape of oil from and entrance offoreign substances to the interior of the hub are prevented bythe shoulders on the bush- -ings and the packing i.

Instead 'of having thechannels e in the bush} ing they may be made in the shaft. i

I claim as my invention leading to a space between the inner ends of 'the bushings, substantially as specified.-

2.- The combinatiou'of the bushings Band '73; l. -A bearing for a loose pulley formed of two bushings, one of which has channels (3,,

E, oil-reservoirO, shaft A, and pulley D, one

of the bushings'beiug provided with channels e, substantially as and fort-he purposes set forth. 3'. The combination of shaft A, bushing B, provided wit-h channels 6, oilreservoir 0, bushing E, and absorbent materially between the inner ends of said bushings, substantially as set forth.

O, bushing B, provided with channels e,'bu shring 'E, pulley D, loose on the shaft, pulley F, fixed on the shaft, and packingi,substantially as -described.

Witne'sses: V I

WM.- E. WOODWARD, J r.,

EDW. DUMMER.

4. The combination of shaftA, oil-reservoir AARON J. ROBINSON.

V the interior surface of the hub of the pulley D A I 

